ISO INTERNATIONAL STANDARD 16981 First edition 2003-07-01 Wood-based panels Determination of surface soundness Panneauxabase deboisDetermination de I'arrachement dela surface Reference number ISO 16981:2003(E) ISO @ISO2003 ISO16981:2003(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ISO2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either Iso at the address below or ISO copyright office Case postale 56: CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland !! @ISO2003—Allrightsreserved ISO16981:2003(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization adopted by the technical committees are circulated to the member bodies for voting. Publication as an InternationalStandard requires approvalbyat least75%of thememberbodies castinga vote rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO16981waspreparedbyTechnicalCommitteeIsO/TC89,Wood-basedpanels. ISO16981isbasedonEuropeanStandardEN311. INTERNATIONALSTANDARD ISO 16981:2003(E) Wood-basedpanelsDeterminationofsurfacesoundness 1 Scope This International Standard specifies a method for assessing the surface soundness of coated wood-based panels and uncoated particleboards, wet and dry-process fibreboards and cement-bonded particleboards. NOTE The grid-patterned face (screen side) of hardboards cannot be tested according to this International Standard 2Normativereferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso16999,Wood-basedpanels-Samplingandcuttingoftestpieces 3Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 surface soundess 4Principle Square test pieces are cut from the boards to be tested. A shallow circular groove is cut into the surface of the test piece and a steel pad bonded to the area within the groove.The tensile load required to pull this pad from the surface is measured. ISO16981:2003(E) Apparatus 5.1 Milling tool, to produce a circular groove (see Figure 1), within the tolerance specified in 6.2. Dimensions in millimetres @35,7 0 0,1 0,3 ±0.1 50 Figure1—Circulargrooveoftestpiece 5.2 Steel mushroom-shaped pad, as illustrated in Figure 2 Dimensions in millimetres @7 0 Φ20-0,1 @31 35,6 ±0.1 Figure2Steelmushroom-shapedpad ISO2003- All riahts reserved ISO16981:2003(E) 5.3 Centring frame, with sufficient stiffness, as specified in Figure 3. Dimensions inmillimetres +0,1 @20,1 ±0,1 50,2 50,2 ±0,1 Figure3Centringframe 5.4Tensile-testing machine,with a sufficient loading capacity,an accuracy of 1% of the load, and an adjustable velocity of the loading head.